Bump sprockets from 3.7.2 to 4.2.0

Bumps [sprockets](https://github.com/rails/sprockets) from 3.7.2 to 4.2.0.
- [Release notes](https://github.com/rails/sprockets/releases)
- [Changelog](https://github.com/rails/sprockets/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rails/sprockets/compare/v3.7.2...v4.2.0)

---
updated-dependencies:
- dependency-name: sprockets
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile

@@ -8,7 +8,7 @@ gem 'rexml', '~> 3.2'
 
 gem 'puma', '~> 5.6'
 gem 'rails', '~> 6.1.7'
-gem 'sprockets', '~> 3.7.2'
+gem 'sprockets', '~> 4.2.0'
 gem 'thor', '~> 1.2'
 gem 'rack', '~> 2.2.4'
 

Gemfile.lock

@@ -638,9 +638,9 @@ GEM
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.2)
     smart_properties (1.17.0)
-    sprockets (3.7.2)
+    sprockets (4.2.0)
       concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
+      rack (>= 2.2.4, < 4)
     sprockets-rails (3.4.2)
       actionpack (>= 5.2)
       activesupport (>= 5.2)
@@ -843,7 +843,7 @@ DEPENDENCIES
   simple-navigation (~> 4.4)
   simple_form (~> 5.1)
   simplecov (~> 0.21)
-  sprockets (~> 3.7.2)
+  sprockets (~> 4.2.0)
   sprockets-rails (~> 3.4)
   stackprof
   stoplight (~> 3.0.0)